Knife holder



FIG. 1 is a perspective view of a knife holder, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is bottom view thereof; and,

FIG. 8 is a perspective view thereof, the broken line showing of a knife blade is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a knife holder, as shown and described. 